At their meeting on March 11, 2026, the Tres Hermanos Conservation Authority Board of Directors selected City of Diamond Bar Council Member Andrew Chou to serve as Chair for 2026.  City of Chino Hills Vice Mayor Ray Marquez was selected to serve as Vice-Chair.  The annual reorganization of the Chair and Vice-Chair occurs at its first meeting of the new calendar year as provided for in the Joint Powers Agreement.  Regular meetings of the Tres Hermanos Conservation Authority are held quarterly on the second Wednesday in March, June, September, and December starting at 6 pm in the City of Industry Council Chambers located at 15625 Mayor Dave Way, City of Industry, CA  91744.